[PATCH v3 16/32] PCI/broadcom: use PCIe capabilities access functions to simplify implementation
From: Jiang Liu
Date: Wed Aug 01 2012 - 11:57:44 EST
From: Jiang Liu <jiang.liu@xxxxxxxxxx>
Use PCIe capabilities access functions to simplify broadcom ethernet drivers'
implementation.
Signed-off-by: Jiang Liu <liuj97@xxxxxxxxx>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 25 ++-------
drivers/net/ethernet/broadcom/tg3.c | 60 ++++++++--------------
2 files changed, 25 insertions(+), 60 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index f755a66..c631f62 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -1142,14 +1142,9 @@ static int bnx2x_send_final_clnup(struct bnx2x *bp, u8 clnup_func,
static u8 bnx2x_is_pcie_pending(struct pci_dev *dev)
{
- int pos;
u16 status;
- pos = pci_pcie_cap(dev);
- if (!pos)
- return false;
-
- pci_read_config_word(dev, pos + PCI_EXP_DEVSTA, &status);
+ pci_pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &status);
return status & PCI_EXP_DEVSTA_TRPND;
}
@@ -6114,8 +6109,7 @@ static void bnx2x_init_pxp(struct bnx2x *bp)
u16 devctl;
int r_order, w_order;
- pci_read_config_word(bp->pdev,
- pci_pcie_cap(bp->pdev) + PCI_EXP_DEVCTL, &devctl);
+ pci_pcie_capability_read_word(bp->pdev, PCI_EXP_DEVCTL, &devctl);
DP(NETIF_MSG_HW, "read 0x%x from devctl\n", devctl);
w_order = ((devctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5);
if (bp->mrrs == -1)
@@ -9330,15 +9324,10 @@ static int __devinit bnx2x_prev_mark_path(struct bnx2x *bp)
static bool __devinit bnx2x_can_flr(struct bnx2x *bp)
{
- int pos;
u32 cap;
struct pci_dev *dev = bp->pdev;
- pos = pci_pcie_cap(dev);
- if (!pos)
- return false;
-
- pci_read_config_dword(dev, pos + PCI_EXP_DEVCAP, &cap);
+ pci_pcie_capability_read_dword(dev, PCI_EXP_DEVCAP, &cap);
if (!(cap & PCI_EXP_DEVCAP_FLR))
return false;
@@ -9347,7 +9336,7 @@ static bool __devinit bnx2x_can_flr(struct bnx2x *bp)
static int __devinit bnx2x_do_flr(struct bnx2x *bp)
{
- int i, pos;
+ int i;
u16 status;
struct pci_dev *dev = bp->pdev;
@@ -9355,16 +9344,12 @@ static int __devinit bnx2x_do_flr(struct bnx2x *bp)
if (bnx2x_can_flr(bp))
return -ENOTTY;
- pos = pci_pcie_cap(dev);
- if (!pos)
- return -ENOTTY;
-
/* Wait for Transaction Pending bit clean */
for (i = 0; i < 4; i++) {
if (i)
msleep((1 << (i - 1)) * 100);
- pci_read_config_word(dev, pos + PCI_EXP_DEVSTA, &status);
+ pci_pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &status);
if (!(status & PCI_EXP_DEVSTA_TRPND))
goto clear;
}
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 09fa3c6..d29fe27 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -3541,17 +3541,9 @@ static int tg3_power_down_prepare(struct tg3 *tp)
tg3_enable_register_access(tp);
/* Restore the CLKREQ setting. */
- if (tg3_flag(tp, CLKREQ_BUG)) {
- u16 lnkctl;
-
- pci_read_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
- &lnkctl);
- lnkctl |= PCI_EXP_LNKCTL_CLKREQ_EN;
- pci_write_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
- lnkctl);
- }
+ if (tg3_flag(tp, CLKREQ_BUG))
+ pci_pcie_capability_change_word(tp->pdev, PCI_EXP_LNKCTL,
+ PCI_EXP_LNKCTL_CLKREQ_EN, 0);
misc_host_ctrl = tr32(TG3PCI_MISC_HOST_CTRL);
tw32(TG3PCI_MISC_HOST_CTRL,
@@ -4322,20 +4314,15 @@ relink:
/* Prevent send BD corruption. */
if (tg3_flag(tp, CLKREQ_BUG)) {
- u16 oldlnkctl, newlnkctl;
+ u16 set = 0, clr = 0;
- pci_read_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
- &oldlnkctl);
if (tp->link_config.active_speed == SPEED_100 ||
tp->link_config.active_speed == SPEED_10)
- newlnkctl = oldlnkctl & ~PCI_EXP_LNKCTL_CLKREQ_EN;
+ clr = PCI_EXP_LNKCTL_CLKREQ_EN;
else
- newlnkctl = oldlnkctl | PCI_EXP_LNKCTL_CLKREQ_EN;
- if (newlnkctl != oldlnkctl)
- pci_write_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) +
- PCI_EXP_LNKCTL, newlnkctl);
+ set = PCI_EXP_LNKCTL_CLKREQ_EN;
+ pci_pcie_capability_change_word(tp->pdev, PCI_EXP_LNKCTL,
+ set, clr);
}
if (current_link_up != netif_carrier_ok(tp->dev)) {
@@ -7942,7 +7929,7 @@ static int tg3_chip_reset(struct tg3 *tp)
udelay(120);
- if (tg3_flag(tp, PCI_EXPRESS) && pci_pcie_cap(tp->pdev)) {
+ if (tg3_flag(tp, PCI_EXPRESS) && pci_is_pcie(tp->pdev)) {
u16 val16;
if (tp->pci_chip_rev_id == CHIPREV_ID_5750_A0) {
@@ -7959,28 +7946,22 @@ static int tg3_chip_reset(struct tg3 *tp)
}
/* Clear the "no snoop" and "relaxed ordering" bits. */
- pci_read_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) + PCI_EXP_DEVCTL,
- &val16);
- val16 &= ~(PCI_EXP_DEVCTL_RELAX_EN |
- PCI_EXP_DEVCTL_NOSNOOP_EN);
+ val16 = PCI_EXP_DEVCTL_RELAX_EN | PCI_EXP_DEVCTL_NOSNOOP_EN;
/*
* Older PCIe devices only support the 128 byte
* MPS setting. Enforce the restriction.
*/
if (!tg3_flag(tp, CPMU_PRESENT))
- val16 &= ~PCI_EXP_DEVCTL_PAYLOAD;
- pci_write_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) + PCI_EXP_DEVCTL,
- val16);
+ val16 |= PCI_EXP_DEVCTL_PAYLOAD;
+ pci_pcie_capability_change_word(tp->pdev, PCI_EXP_DEVCTL,
+ 0, val16);
/* Clear error status */
- pci_write_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) + PCI_EXP_DEVSTA,
- PCI_EXP_DEVSTA_CED |
- PCI_EXP_DEVSTA_NFED |
- PCI_EXP_DEVSTA_FED |
- PCI_EXP_DEVSTA_URD);
+ pci_pcie_capability_write_word(tp->pdev, PCI_EXP_DEVSTA,
+ PCI_EXP_DEVSTA_CED |
+ PCI_EXP_DEVSTA_NFED |
+ PCI_EXP_DEVSTA_FED |
+ PCI_EXP_DEVSTA_URD);
}
tg3_restore_pci_state(tp);
@@ -14303,9 +14284,8 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
tg3_flag_set(tp, PCI_EXPRESS);
- pci_read_config_word(tp->pdev,
- pci_pcie_cap(tp->pdev) + PCI_EXP_LNKCTL,
- &lnkctl);
+ pci_pcie_capability_read_word(tp->pdev,
+ PCI_EXP_LNKCTL, &lnkctl);
if (lnkctl & PCI_EXP_LNKCTL_CLKREQ_EN) {
if (GET_ASIC_REV(tp->pci_chip_rev_id) ==
ASIC_REV_5906) {
--
1.7.9.5
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